Question

Let A(P, 4, 1) and B(s, t, u) be two relations in which s is the foreign key of B that refers to the primary key of A.
Now, if we want to perform the following four operations, then which of the following is true about the referential integrity constraint?
1. Insert into a
2. Insert into B
3. Delete from A
4. Delete from B
331
A.
O All of them will cause violation
B.
Operation 2 and 3 will cause a violation
Vio
C.
None of them will cause a violation
D.
O Operation 1 and 3 will cause a violation​

Answer 1

Answer:

"Insert" (and any subsequent words) was ignored because we limit queries to 32 words.